Controlled Atmosphere Effects on Physical Changes and Ethylene Evolution in Harvested Okra

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  • 1 Department of Horticultural Science and Landscape Architecture, University of Minnesota, St. Paul, MN 55108

Pods of okra (Abelmoschus esculentus L. Moench) stored in an atmosphere of 5% O2 and 10% CO2 at 10 ± 1C were compared with pods stored in air at the same temperature to determine the effects of storage environment on physical characteristics and ethylene evolution of the pods. Controlled-atmosphere-(CA) stored pods lost less weight, retained total solids and chlorophyll better, and had a higher mucilage viscosity than air-stored pods. Toughness, fibrousness, and incidence of microbial decay were lower in CA-stored pods than in air-stored pods. No differences were seen in the levels of alcohol-insoluble solids or discoloration of the cut surface between pods from the two storage environments. Ethylene evolution was lower in CA- than air-stored pods.

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